10
+
10
=
____________________
20
+
30
=
____________________
30
+
50
=
____________________
10
+
20
=
____________________
20
+
40
=
____________________
30
+
60
=
____________________
10
+
30
=
____________________
20
+
50
=
____________________
30
+
70
=
____________________
10
+
40
=
____________________
20
+
60
=
____________________
30
+
30
=
____________________
10
+
50
=
____________________
20
+
20
=
____________________
30
+
40
=
____________________
